New polyazo dyestuffs



Patented June 9, 1931 WINFR-ID HENTRECH All? 13 Till-h HILGER, OF GOLOGNE-MULHEIM, AND RUDGLF KITOCHE, OF LEVERKUSEN-ON-THE- RHINE, GEBLEANY, llSEIQII EO Eit ill'l AIEILEN'E V7 Eli-251$, INC), 01? NEXV YORK, N. Y., A CQRPORATION 0F DELAY/"ARE EEA'RDTE'ZAZlE-l, "CHEESEGEE-ON-THE-RHINE, JOSEF NEVJ POLYAZO DYESTUEFS No Drawing. Application filed November 16, 1928, Serial No. 320,002, and in Germany Hovember 22, 1927.

The present invention relates to new polyazo dyestuffs containing the cyanuric ring, more particularly, it relates to azo dyestutls of the followi general formula son wherein A stands for any initial component, ac stands for hycrogen, a sulfuric acid or carliox ic r cid group, a stands or: gen or sulfur. E stand f substituted =or a v1 or a i an; nrioocGHmi-r, H or g and the 1:2-C-atoms of the napl to --ie nucleus jointly stand a heterocyclic ring system containing a hetero-nuclear amino group which is connected with the cyanuric ring, for instance, the following ring system pound of any desired initial component and v such a derivative of l-naphthylamine or a sulfonic acid or afcarb'oxylic acid thereof coupled in the para-position to the amino group, as contains in 2-position of the naphthalene nucleus an alkylated hydroXy group or alkylatet mercapto group, for example compounds of the followmg formula:

in which A is the desired initial compound, and coupling with a compound of the general formula:

CyR

11 which y represents cyanuric ring, B

ls l a substituted or unsubstituted perimine-hydroxynaphthalene or peri-(aminoienzoylamino)-hydroxynaphthalene or a iuhstitution product or equivalent thereof, '11 which the linkage NHCO- can also ce replaced by NH- CONH, or for a derivative of a peri-amino-hydroXy-naphthalene in which the li2-C-atoms of the naphthalene nucleus are members of a heterocyclic ring system with a heteronuclear amino group, for instance for an aminophenyl-1.2-imidaZole-8-hydr 51y naphthalene or for an amino-pl enyl-LQ-triazole-S-hydroXy-naphthalene, R stands for an amino azo compound and 2 stands for a halogen atom or any desired residue, which is linked to the'cyanuric ring by a nitrogen, oxygenor sulfur atom.

Dyestuii's of the above type are also 0b Y tainalole when the introduction of the cyanuric ring is effected into the compounds marked B in the above general formula after the coupling with the above mentioned diazo azo compounds. Moreover the invention is not restricted to the use of such coupling components as contain in the cyanuric ring already'produced amino azo compounds (see B in the general formula) but coupling compounds can be used in their place, which contain residues, such as the following ones, in the cyanurlc ring:

SO H

N=N N=N Hols tion of the naphthalene nucleus an alkylated hydroxy or mercapto group and a compound of the following formula:

are formed, wherein z stands for NH, NHCOC ILNH, NHCONHC I LNH, or 3 and the 1:2-C-atoms of the naphthalene nucleus jointly stand for a heterocyclic ring system containing a heteronuclear amino group which is connected with Cy, Cy stands for the cyanuric ring, 2 stands for halogen or any substituent linked with an oxygen, sulfur or nitrogen atom to the cyanuric ring and R stands for the residue of an aromatic diamine, and 1; stands for H or H80 The following examples illustrate the principles underlying the invention, without restricting the same thereto:

Example 1.The diazo compound, produced from 479 parts by weight of the amino azo compound from 4-amino-1z3-dimethylbenzene-6-sulfonic acid and 1-amino-2-naphthol ethylether-6-sulfonic acid, is separated, stirred with ice-water and caused to flow at 510 C. into a well stirred solution, advantageously in the presence of pyridine, of 810 parts by weight of the condensation product obtained in any desired sequence from one molecule of cyanuric chloride (cyanuric bromide), one molecule of 1-amino-8-hydroxy-naphthalene-S: G-disulfonic acid, one molecule of -ainino-4-hydroxyazo-benzene- 3-carboxylic acid, in which the third chlorine atom of the cyanuric chloride is replaced by hydroxyl. Coupling immediately sets in, accompanied by a deep green coloration of the solution and is soon complete. The dyestuif having in its free state the probable formula:

| OH NH partly separates, the complete separation is effected by salting out, after which the working up takes place in the customary manner. Cotton, for example, is dyed from a Glauber salt-sodium carbonate bath, in powerful, brilliant green shades of very good fastness to light.

Instead of t-amino-1-3-climethylbenzene- 6-sulfonic acid other amino sulfonic acids of the benzene or naphthalene series can be used, also for example t-amino-l-methylbenzene- 3-sulfonic acid, 4-methyl-2-amino-1:1-diphenyl-sulfone-t-sulfonic acid, i-benzoylamino-1-amino-benzene-2-sulfonic acid, the dehydrothiotoluidine disulfonic acid and the like; likewise unsulfonated amines, such as 3-chloro-2-amino-l-methylbenzene and the like are applicable; the 1-a1nino-2-naphthol ethylether-G-sulfonic acid can be replaced by analogously constituted derivatives of a-naphthylamine, coupling in the para-position to the amino group, for example, also by the 1-amino-2-ethoxynaphthalene-6-carboxylic with A. certain number of similar compounds is mentioned in applications Ser.

No. 203,266, filed July 2nd, 1927 and Ser. No. 1

288,803, filed June 27th, 1928.

Thus for example, the trisazo dyestuif from 2-aminonaphthalene-8-sulfonic acid, l-amino -2 -naphthol-methyl-ether-6-sulfonic dyes cotton well.

acid and the condensation product used as coupling component in the above example dyes cotton an extraordinarily clear yellowish green shade. Instead of Z-naphthylamine- S-sultonic acid the amino azo compound of this acid and m-toluidine can also be used. By replacing in the above type of trisazo dyestuiis the 1-amino-2-methoz:ynaphthalene-6- sulfonic acid, for example, by the l-amino- 2.7 naphthylenedi ,8 -hydro:;y propionic acid: I HZ noocc1ncH2-o o-cmom ooon and the condensation product from one molecule of cyanuric halide, one molecule of 1- amino 8 hydroxynaphthalene 3 6 disulfonic acid, one molecule of i t-amino-l hydroxyaZobenzene-3-carboxylic acid, in which the third halogen atom of the cyanuric halide is replaced by hydroxyl by the condensation product of the formula which can be obtained, for example, from the condensation poduct from molecular quantities of cyanuricchloride, l-amino-S-hydroxynaphthalene-3 G-disultonic acid, 4-amino-5- methyl e hydroxyazobenzene -3"- carboxylic acid by boiling with an excess oi dimethylamine solution, an unusually clear green direct dyestufi" is likewise obtained, which The condensation product produced from molecular quantities of cyanuric chloride, 1-amino-8-hydroxynaphthalene-3 6 disultonic acid, -amino l'-hydroxyazobenzene-EB-carboxylic acid and aniline, described in the German Patent No.

436,179, example 13 can obviously also be employed.

Furthermore by coupling the diazo azo compound obtained from l-amino-Q-sulfooxanilic acid and 1amino-2-ethoxynaphtha-v soda solution, an amino trisazo dyestuii is obtained whichdyes cotton a very'pure, yel- 'lowish green shade from a sodium sulfatesodium carbonate bath; by diazotizing on the fiber and developing With ,B-naphthol a green shade is obtained, which is fastto washing and light. A similar and more yellow dyestuff is produced by replacing the 1-amino2-ethoxynaphthalene by 1-amino-2- methylmercaptonaphthalene SgGHa Example 2.The diaz'o azo compound produced in the known manner from 524 parts by Weight of the azo dyestufi from 4-aminoacetanilido -sulfonic acid and 1-amino-2- hydroxynaphthalene oxethylether sulfuric acid ester is coupled according to the directions of Example 1 with 935 parts by weight of the condensation product from one molecule of cyanuric chloride, one molecule of l-ethylamino-8-hydroXynaphthalene 3 6-disult'onic acid, one molecule of 4-amino-4-hydroxyazobenzene-2: 3-dicarboxylic acid and one molecule of t-methyl-l-thiophenol. The resulting product having in its free state the prob-able formula:

\COOH OOH S0311 OH /N=N N=NONrLoocm O.CHz.CH .O.SO H S0 11 ocnrcmosom acid (or 5-an1ino-2-hydroxybenzoic acid or also 1-aminobenzene-l-sulfonic acid) very clear, yellowish green dyestuffs are obtained.

The shade will become somewhat bluer if in the above cyanuric chloride condensation product the l-(4-aminobenzoylamino)-8- hydroXynaphthalene-3:6-disulfonic acid is replaced by the 1*(4-aminophenylurea)-8 hydroXynaphthalene-3 6-disulfonic acid.

In an analogous manner it is also possible to use compounds, in which a heterocyclic ring is linked in the 1 2-position to the naphthalene nucleus of the peri-amino naphthol sulfonic acids, which carry a heteronuclear amino group. Such compounds are, for example, the 3-amino-phenyl-1.2-naphthimidazol-8-hydroXy-3.6-disul'fonic acid (see Ger- 7 man Patent No. 193,350) and the 4:-aminophenyl -1.2- naphtho -triazole 8 -hydroXy-3.6- disulfonic acid (see German Patent No. 146,37 5). It is likewise possible to introduce other heterocyclic rings and peri-amino naphthol sulfonic acids as well as compounds, containing diazotizable amino groups, of the above employed -1- (aminobenzoylamino-S- hydroxynaphthalenes, such as, for example:

Dyestuffs of this type can moreover also be produced in other ways For example, the further diazotizable aniino azo compound from 1-amin0benzenc-2: 5- disulfonic acid and l-amino-Q-ethoxynaphthalene-G-sulfonic acid is first coupled with l l aminobenzoylamino) 8 -hydroxynaphthalene-3:6- :lisulfonic acid, then molecular quantities of the resulting (purified) dyestuff are condensed with cyanuric chloride in aqueous suspension at 20 to 30 0., further condensed at 4550 C. with 4-amino-t-hydr0Xyazobenzene-3-carboXylic acid and finally boiled with ammonia.

Ewample 3.-The diazo azo compound from 465 parts by weight of the azo dyestutf from 4: amino 1 methylbenzene 3 sulfonic acid and 1-amino-2-ethoxynaphthalene-S-sulfonic acid is coupled with 6 16 parts by weight of the condensation product from molecular quantities of cyanuric chloride, 1-amino-8- hydroXynaphthalene-G-sulfonic acid, L-aminoA-hydroXyazobenZene-3-carboxylic acid and ammonia. The new dyestuff has in its free state probably the following formula:

Cotton is dyed by the dyestufi' in pure green shades from a Glauber salt sodium carbonate bath.

Green dyestufi's of the same purity of shade 5 are obtained by combining the condensation HOOC product of the formula:

COOH 000011 N H l la EG-Na f w th N N N N NH 011 \NH OH @SOSH (l/ with two molecules of the diazo aZo compound from l-aminobenzene-Q:5-sulfocarboxylic acid and 1-amino-2-ethoXy-naphthalene-S-sulfoni'c acid. The l-amino-S-hy- 5 droXy-naphthalene-G-sulfonic acid can be replaced by 1-amino S-hydroxynaphthalene-5- sulfonic acid.

Example 4.930 parts by weight of the amino azo compound from l-amino-l-methyl-benzene-3-sulr"onic acid and 1-amino-2- ethoxy-naphthalene-6-sulfonic acid are further diazotized and coupled, as in Example 1, with 971 parts by weight of the condensation product obtained in any desired sequence from one molecule of cyanuric chloride, two molecules of l-amino-S-hydroxynaphthalene-3 6-disulfonic acid and one molecule of 4-a1nino-4-hydroXy-azobenzene- 3-carboxylic acid. The new dyestufi having in its free state the probable formula:

soar! N II ll N I I CH Cl NH:

SOQH

are diazotized indirectly. The diazo compound is salted out made into a paste with ice-water and coupled, advantageously in the presence of pyridine or much ammonia, at 0 C. with 635 parts by weight of the condensation product from one molecule of cyanuric chloride, one molecule of 2-nitro-4- ami1i0-1-methylbenzene and one molecule of dimethylamine. The blue azo dyestufi is salted out and again dissolved, the nitro group is reduced in the presence of a little ammonia with an aqueous solution or" 357 parts by weight of crystallizedpure sodium sulfide. The resulting purified dyestufi' of is obtained which dyes cotton a pure yellow the formula ish green shade. By replacing the 1-(2-carnoas can also be built up in the following way The diazotized aminoazo compound from d-chloro-1-aminobenzene-2-sulfonic acid and 1 amino 2- methoxynaphthalene 6 sulfonic acid is combined with the condensation procluct from one molecule of cyanuric chloride, one molecule of l-amino-S-hydroxynaphthalene-S-sulfonic acid, one molecule of 2 -diamino-l-methylbenzene and one molecule of dimethylamine.

Quite similar dyestuffs are produced, when instead of the above condensation product that from one molecule of cyanuric chloride, one molecule of 3-amino-formanilide (or 3- amino-acetanilide, 3-aminophenyl oXaminic acid, 3-aminophenyl sulfaminic acid and the like) and one molecule of dimethylaniline is employed, and in the resulting disazo dyestuff the acyl residue is removed, say by boiling for about half an hour with a 10% caustic soda solution, or in the case of 3-aminophenyl sulfamic acid by saponifioation in an acid medium, or simply by further diazotization. Obviously in the type of cyanuric chloride condensation products here used the heteronuclear amino group can be introduced by reduction of a nitro group or saponification of an acyl group and then coupling can be effected with the diazo compound.

By further diazotizing the amino disazo dyestuff of the above formula, obtainable according to one of the several processes (it will be advantageous to work with a fairly dilute solution and at about 30 C.) and coupling the separated diazo disazo compound with l (2 carboxyphenyl) -3-methyl-5-pyrazolone in sodium carbonate solution a dyestuifhaving in its free state the probable formula:

OCH; I

boxylphenyl) -3-methyl-5-pyrazolone by the sulfonic acid of acetoacetyl-Q-anisidine, a clear and more bluish green shade is obtained, which is fast to light. Furthermore by diazotizing on the fiber the amino disazo dyestuffs of the above formula and coupling with methyl phenyl pyrazolone, a very clear yellowish green results, which is fast to washing and light. Finally, by coupling the diazotized aminoazo dyestuff from l-chloro-laminobenzene-2-sulfonic acid and l-amino- 2-methoxynaphthalene-6-sulfonic acid with the condensation product from molecular quantities of cyanuric chloride, 1-amino-8- hydroXynaphthalene-6-sulfonic acid, l-amino -1 methylbenzene-2- azo l- (2- carboxy- 5-sulfo) phenyl-3-methyl-5-pyrazolone of the formula:

and dimethylamine, a product analogous to the above described trisazo dyestuff is obtained, which can also be produced by combining the diazotized aminoazo dyestufl from eL-chloro-l-amino-benzene-2-sulfonic acid and 1',- amino- 2 methoxy'naphtralene 6 sulfonic acid with the diazotized condensation product from one molecule of cyanuric chloride, one molecule of 2:t-diamino-1-methylbenzene and one molecule of dimethyl-amine and coupled with l- (2 -carboxy-5-sulfo)phenyl-3- N ll N net-o 0 met 7 N OOH methyl--pyrazolone (advantageously in the presence of sodium acetate).

Valuable green dyestufis of the same type are also produced by combining the diazoazo compound from l-chloro-l-aminobenzene-2-sulfonic acid or similar compounds and 1-amino-2-methoxy-naphthalene-6-sulfonic acid or equivalents thereof, such as are described in the co-pending application Ser. No. 203,266, filed July 2nd, 1927, with the condensation products from molecular quanti-.

ties of cyanuric chloride, and amino hydroxynaphthalene sulfonic acid, 1:3-phenylenediamine-a-sulfonic acid or 1: l-phenylenediamine-3-sulfonic acid and dimethylamine or other desired compounds, possessing reactive hydrogen atoms attached to the nitrogen-, oxygen or sulfur atom, finally diazotizing in substance or on the fiber and coupling with methyl ketol, its analogues and substitution products, pyrazolones or derivatives of the ,B-ketone aldehyde or 1:3-dihydroxyquinolines or sulfazones. Furthermore, clear yellowish green azo dyestufis are obtained by further diazotizing, for example, the aminoazo compound from 'c-ChlO1Ol-llllll'l0bl1- zene2-sulfonic acid and l-amino-2-methoxynaphthalene-G-sulfonic acid and coupling with the saponified condensation product from one molecule of cyanuric chloride, one molecule of 1-amino-8-hydroxynaphthalene- 3: G-disulfonic acid and two molecules of amino-f0 'manilide, then tetrazotizing in substance or on the fiber and coupling with pyrazolone, derivatives of ,8-ketone aldehyde, methyl ketol or the like.

We claim:

1. As new products polyazo dyestuffs of the probable general formula:

2 on y Cy R2 l I or y and the l 2-C-atoms of the naphthalene nucleus jointly stand for a heterocyclic ring system containing a heteronuclear amino group, 7) stands for H or a sulfonic acid group, Cy stands for the cyanuric ring, 2 stands for halogen or any substituent linked with an oxygen, sulfur or nitrogen atom to the cyanuric ring, and R stands for an amino azo residue, dyeing various green shades fast to light and yielding upon reduction with stannous chloride and hydrochloric acid among others a 1.4-naphthalene diamine compound containing in 2-position an alkyla-ted hydroxy or mercapto group and a compound of the general formula:

z 011 y0 K zN I 1 2 wherein 3 stands for NH, NHCOCJ-LNH,

NHCCNHC ILNH, or y and the 1:2-C-,

atoms of the naphthalene nucleus jointly stand for a heterocyclic ring system containing a heteronuclear amino group, Cy stands for the cyanuric ring, 2 stands for halogen or any substituent linked with an oxygen, sulfur or nitrogen atom to the cyanuric ring, R stands for the residue of an aromatic diamine and p stands for -H or a sulfonic acid group.

2. As new products polyazo dyestuffs of the probable general formula:.

so n SOaH wherein Cy stands for the cyanuric ring, .2 stands for halogen or any substituent linked with an oxygen, sulfur or nitrogen atom to the cyanuric ring and R stands for an aromatic nucleus.

3. As a new product the polyazo dyestufi of the probable formula:

HO S

dyeing cotton from a Glauber salt-sodium carbonate bath brilliant green shadesof very good fastness to light and yielding upon reduction with stannous chloride and hydrochloric acid one molecule of 1-3-dimethyl-4laminobenzene-(S-sulfonic acid, one molecule of 1 4-diamino-2-ethoXy-naphthalene-6-sulfonic acid, one molecule of the compound of the following formula:

no e SOaHI v and one molecule of l-amino-t-hydroxy-benzene-3-carboxylic acid.

In testimony whereof We have hereunto set our hands.

WINFRID HENTRIOH. [L. s.]

MAX HARDTMANN. [L. 8. J08. HILGER. [L. 8. RUDOLF KNOCHE. [L- 5. 

